Walking Dead: Survival Instinct Gameplay Trailer and Preorder Deals

Activision and Terminal Reality today announced that players who pre-order the game from GameStop or Amazon will get an exclusive DLC pack:

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GameStop Herd Mode Challenge – How many frenzied flesh-eaters can you survive against before joining their ranks? Take on endless waves of walkers, each more dangerous than the last, in the all-new Herd Mode. Each wave of undead held off brings with it a new outbreak of hungry biters and new opportunities to rack up an even higher score.